“I am very happy with the home security system that was installed by Jon. He came to my house to install the system the day after I called him. He spent 45 minutes listening to my expectations from a security system and sharing with me his thoughts. He then installed and programmed the sensors very professionally. I changed my mind a few times on the location of the sensors and he patiently did what I asked him. Thank you Jon! Thank You Northstar Calgary Security Systems!” ~ Alireza Khanizadeh - Calgary, AB